Dumping-elevator.



Patented July 6, 1909. 2 sums-SHEET 1.

E.' B. sYMoNs.

DUMPING BLEVATOB.

APPLIOATION FILED IAB.. 18, 1908.

Patented July 6, 1909. 2 SHEETS-SHEET 2.

UNITED STATES PICXEEN'I OFFICE.`

EDGR B. SYMONS, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO THE T. L. SMITH COMPANY, 0F MILWA'UKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

DUIPING-ELEVATOR.

Specification of Letters Patent.

Application led 'latch 18, 1908. Serial No. 421,872.

To all whom it may concern:

Be it known that I, EDGAR B. SYMoNs, residing in Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Dum ing-Elevators, of which the following is a i escription, reference being had to the accompan Ting drawings, which are a part 'of this speci cation.

My invention has relation to improve'- mentsv in automatic dumping elevators, more especially intended, although not necessarily, for dumping concrete.

In the construction of concrete buildings, elevators provided with buckets for con taining the concrete have been employed, in order to hoist the concrete to different floors of the building, and thereby avoid the laborious work of manuallycarrying the concrete to the different floors where said concrete is desiredto be used.

It is the object of my invention to provide an improved construction of elevators of this character in which simplicity of construction and effectiveness of o eration are secured, and in which certain a vantageous features are present, as will be hereinafter more fully set forth.

lWith the above, and other incidental objects in view, the invention consists of the devices and parts, orvtheir equivalents, as hereinafter set forth. i

In the accompanying drawings, Figure 1 is a side view of the complete device as arranged within a building, and showing the different floors of the building in section,

. and furthermore showing a mixing receptacle in proximity to the apparatus; Fig. 2 is'a rear view of Fig. l, parts broken away; Fig. 3 is an enlarged detail view of the lower portion of the apparatus, the channeled rail which is closest to the line vof vision being omitted; Fig. 4 is a rear view of the elevator and bucket, the channeled rails being shown b dotted lines; Fig. 5 `is a plan view of Fig. 4; Fig. 6 is a detail view of one of the members of the mechanism for tilting the bucket Fig. 7 is a cross sectionon the line 7-'7 of Fig. V3: andf-E-ig. 8 is a fragmentary view o f one ofthe channeled rails, "showing the means for attaching twosections of the j rail together.

Referring tothe drawings,y the numerals 9 9` indicate Atwo vertical railsV which are preferably channeled, or U-shaped :in cross section, with the channels facing inwardly. Guide ro es or cables for assisting in maintaining t e erect position of the rails are ployed. The rails extend upwardly through different floors of the buildln and in order to facilitate the erection of t e rails and to obviate the necessity of their being built s ecially for each building, and to permit of tlieir being used in different buildings, said rails are preferably made in sections placed end to end and united at the joints by plates 10 bridgin l over the different joints and 12, separated slightly from eachother, andA having their outer ends straddling and riveted tothe upper ends of the side ,beams ofthe elevator frame, as most clearly shownin Fig.

distance at their centers to provide space for a pulley 13, the axis 14 of the pulley being mounted in said beams. The side bea'ms11 of the elevator frame are preferably of a form T-shape in cross section throughout their lengths, exce ting at their extreme upper ends where t ey are Aflattened to permit of the attachment thereto of the beams 12. The particular T-sha dformation cf the beams 11 is preferred or the-reasbn'that the stems of the T which project outwardly are made to extend into/the channels of the rails 9, whereby theelevatonframe is guided in its up andfdown movement. i

A rope or cable 15 is connected at one end .to a horizontal beam 16 in the upper portion .of the building, and is extended downwardly to and around the pulley 13, thence upwardly `iand over pulleys 16', 16', and thence down- Patented Juiy', 1909.

shown in the' drawings, and are advisably ern-V riveted to t e sections, asinost clearly shown 5. These beams 12 are spread apart a greater wardly to the power for operating the elevabucket preferably Yhaving an inclined front face, a straight rear/face, straight sides, and a rounded bottom. The bucket has attached to opposite sides thereof ,arms 18, 18.- The lower ends of these arms extend below the bottom of the bucket, and are provided with eyes through which pass a shaft 19, said shaft forming a pivot` upon which the bucket can turn. The opposite ends of this pivot shaft are supported in brackets 20, 20 which are connected to the side beams 11 of the elevator frame, and these brackets extend forwardly, and are formed at their forward ends l with apertured bosses which provide bearings The opposite ends of this shaft 21 project through the bearings E for a forward shaft 21.

and carry rollers 22, 22, which rollers bear against the forward flanges of the channeled beams `11, as most clearly shown in Figs. 3, 5 and 7. .Across the top of the bucket, on the rear side of said bucket, is rigidly connected an arm 23, the ends of said arm extending beyond the sides of the bucket and carrying rollers 24, 24 thereon, said rollers` bearing against the rear flanges of the vertical channeled rails 11. Near the lower ends of the channeled rails 11 and attached to the'rear liangesthereof are cams 25, 25. Each cam is similarly constructed, that is to say, is provided with a'straight central portions and inclined ends or terminals.

In the room of the building in which the concrete is-to be dumped, l employ a bucket tilting mechanism 26, consisting of two similar arms spaced a desired distanceapart, one of said armsbeingshown in detail in Fig. 6. Each arm is curved from its lower end upwardly to a point slightly beyond its center, an'd is then continued in a straight extension.v On one side each arm is formed with ribs 27, 27., said ribs spaced 'a distance a art to forma channel 28 therebetween. he arms are so disposed that the channels thereofface each other. The upper rib ofeach arm only extends approximately one-half the distance of the lower rib, and is then preferably continued upwardly in a short straight extension'29. The lower edge of each tilting device is provided medially with an apertured boss 30 to receive a pivot pin 31. The twov ,members of the tilting mechanism, therefore, are pivetally supported, so that they can be' swung from the position shown in Fig. 1 to an approximatel upright position. This is advantageousin that if the work on the particular i floor where this particular tilting mechanism is located is suspended, and the work transferred to some floor above where a similar tilting mechanism is located, it will not'be necessary to remove the two members constitutingr` the tilting mechanism at the lower :Hoor in order to permit of the travel of the elevator and bucket to the floor above, but it is only necessary to turn said pivoted members of the tilting mechanism on their pivots to an upright position, at which position, of course, they offer no impediment to vthe upward travel of the elevator. The

two membeudnf the tilting mechanism are @sence 5 desirable manner, and in the drawings IV showfor the tie rod 34.'

r When the elevator reaches the point where it is desired to deposit the concrete, andthe bucket is tilted for the purpose of discharging its contents, said contents may be received into a wheelbarrow below the discharge end of the bucket, or ma first be dumped into any desirable form of opper, as, for instance,

a hoppersimilar to the ho per 35 shown in Fig. 1 ofthe drawings. This hopper de ends from the horizontal su port 32, and the ower discharge end thereof is normally closed by a curyed gate 36 rovided with an operating handle 37 and a so provided with upwardly extending wings 38 which are pivoted to the 4sides of the discharge end or spout of the hopper. The hopper, therefore, .can be lled purpose a brace bar 33 and a barrow or other receptacle can then`be'un below the discharge s out of the hopper, and A uponthe opening of t e'gate 36 the contents o the hopper are of ncourse deposited into the wheelb'arrow, or other receptacle. 1

In'Fig. 1 of the drawings, I have shown an ordinary form of tiltable mixing receptacle 39 which is so positioned 'that when the bucket is in its lowermost osition and the discharge end ofthe receptacle is tilted downwardly, as shown by dotted lines, said end of the receptacle will discharge the mixed materials in to the bucket.

In the operation of the apparatus, and when the bucket is in the lower full line position shown in Fig. 1, the receptacle is tilted to the dotted linel position shown in said figure. yThe mixedmaterials will then be discharged linto the bucket; .The receptacle is now `tilted back to its original mixing osition as shown bythe full lines. Power eing now applied to the .cable 15 in the proper direction, the elevator with its pivotally connected bucket is causedto, travel upwardly, "the lowerfront wheels 22 traveling along the front langes ofthe channeled rails 9, and the upper rear wheels 24travel along the rear flanges of said channeled rails. The mo ment the u per wheels 24 strike the lower inclines of lili i inclines, the bucket 17 is caused to be swung on the pivot shaft 19 in a direction to bring it from the position which it formerly occuied; and as illustrated in full lines in the ower portion of Fig. 1, to a more nearly upright position, as shown by the dotted lines. This swinging ceases when the rollers reach the straight central portions of the cams, but the ucket when the rollers are thus g traveling along said straight portions is e cams 25 and .ride along lsaid ers 24 thereo maintained in such position "as to clear the .Y discharge end of the receptacle. If this progradually returned to their engagement with the rear lianges of the channeled rails l9. When this engagement takes place, the bucket of course necessarily tilts ack to its original .full line osition' which occurs .at a

time: when the ucket has beenh elevated above and clear. of the discharge end of the rece tacle. It will be noticed that g the bu'c et is so pivoted that the excess weight or center of gravity is forward of a vertical line drawn through the ivotal connection of said bucket with the e evator, whether the.

bucket is in the full line position illustrated lati-the lower, portion' of Fig. 1, or in the vdotted lineposition at said lovaer portion of 1, whereby the bucket is always maintalned in a pro er u right-position, without the necessity o, emp oymg latches, or similar devices.` W ith the continuedn y, ward movement of the elevator, the buc et is finally brought to a osition where the upper rollfp enter the channels 28 of the two members of the bucket tilting mechanism 26. These rollers, therefore, with the still further upward movement ofthe ele- Vator ride in the channels to a point forward of the u right extension 28 of the upper rib 29, at W ich osition the excess Weigh fis at the rear, andP the bucket thereby tiltsA over soas to bring its upper open end into the discharging 'position illustrated by dotted lines at the u' r portion of Fig. 1, the rollers 24, with t is final tilt necessarily travelling back lto a position immediately below Ythe rib extension 29. Whenv the bucket is thus tilted it discharges its con/tents into the hopthe rollers 24r will enga e against the -rib ex.

per 35, and from the hopper the mixed materials are iinally deposited into .a -wheelbarrow, -or other receptacle, as herein before pointed out. u Y

In the event of the elevator frame being laccidentally raised afterthe bucket has been tilted to the dotted line discharging position,

tensions 29, and if the ifting of the elevator 'were continuedyfurtherj the said rollers would leave "said/rib extensions, and the bucketxwould tilt to agi-eater extent than that shown by the dotted lines, resulting in the danger of the endfof, thefbucket which 'carries the rollers 24 bein bron ht forcibly tagainst the channeled ra' s 9. yn order to V,giiard against this contingency "1 iL-shaped arms 40 extending fromA 4'beams 11 ofthe elevator frame with which rovide the side projections 41 extending from the bucket are adapted to engage. In this manner, the,

t contents, the elevator frame isglowered, and

this causes, first, a slight advance movement of the rollers 24 in the channels 28, and then a rearward movement, the bucket by the time, the rollers are leaving the lower ends of Y thechannels being tilted back to its original position. ered to such position that the further descent would beimpeded Aby contact of -the bucket with the discharge end of the receptacle, the rollers 24 ride up the up r inclines of the cams l25 and then on `to t ie straight portions of said cams so as to draw back or switch the bucket to such position as to clear the dischargeend of the receptacle, the bucket finally resuming its normal position when the rollers 24 leave the lower inclines of the cams.

As heretofore stated, the stems of the T- shaped side beams of the elevator frame extend into the channels of the` rails 9. lf'no means were provided to guard against it, there might, without resorting to further means, be considerable lateral play of the frame of theelevator in fact, suiiicient lateral play to 4.cause the stems of the T- shaped side beams 11 to work entirely out of the channels, particularly so when the bucket is atv the bottom, and there is slack in theY elevator cable. Tol revent this, I provide the brackets 20 Wit outwardly exending ngeis .42, 42 which iin ers also extend into the channels of the rai s'9. I furthermore provide the upper ends of the side beams 11 with L-shaped iingers 43, 43, the outwardly extending members tlrereofalso projecting into the channels ofthe rails 9. By provision of these additional fingers but very slight lgil-ay of thcpelevator frame is permitted, and

i ence the danger 'alluded to is avoided. l

furthermore rovide stops for 'preventing excess tilting of) turned on its' pivot to clear the discharge end ofthe receptacle. These stops consist of upright beams 44. The rollers 24 when they W hen the elevator frameis lowthe bucket when said bucket is` iis are on rthe straight portions ofthe cams only bear very slightly against these stops.

What I claim as my invention is: .1. In a dumping elevator, the combination of upright rails arranged adjacent to the 5 discharge end of a mixing receptacle, an elevator frame adapted to travel up and down along said rails ut incapable of y any lateral movement with' respect to the rails, a bucket carried by the elevator frame and ivoted thereto so as to becpable of iatera movement with respect to the frame, and means'.

constructed, when the elevator starts on its upward travel, for switching or moving the bucket laterally of the elevator frame, While said elevator frame remains fixed as to any lateral movement, and thereby causing the bucket to clear the discharge end of the mixing receptacle, and to also clear said discharge end of the receptacle before the bucket completes its down movement.

2. ln a dumping elevator, the combination of upright rails arranged adjacent to the i discharge end of a' receptacle, an elecarried by the elevator frame and upward travel, for switching or moving the bucket laterally of the elevator frame, while .said elevator frame remains fixed as to any lateral movement, and thereby causing the bucket to clear the discharge end of the mixing receptacle, and to also clear said discharge end of the receptacle before the bucket com letes its down movement, the pivot of the ucket being also so located that the excess weight or center of gravity of the bucket, during the travel of the elevator frame u and down the rails, and also when the buc iet isswitched'so as to clear the discharge end of the mixing receptacle, will be forwardof a vertical line drawn through the pivotal point of the bucket.

3. In a dumping elevator, the combination of upri ht rails, an elevator frame adapted to trave up and down along said rails, a bucket carried between the sides of the elevator frame, a pivot shaft passing freely through ears or bearings at the lower end of the bucket, brackets connected to the sides of the elevator frame and projecting forwardly therefrom, and in the rear ends of which brackets the p ivot shaft is supported, a shaft journaled in the forward ends of said brackets, rollers carried at. the ends of said shaft and bearing against the front faces of the upright rails, and rollers mounted on the ends of axes projecting laterally froml the up er end ofthe rear side of the bucket, said rol ers ada ted to bear against the rear faces of the upright rails.

4. In a dumpin elevator, the combination of upright rais U-sl'iaped or channeled inl cross section, the channels of the respective rails facing each other, an elevator frame, the side beams vthereaf being of Te sha ed form in cross section, with the stems of t leTs rojecting into the channels of the rails, a buciket carried between the side members of theelevator frame, a ing freely through ears or lower end of the'bueket, brackets connected ivot shaft passearmgs at the eaasoa upright ra' and rollers'mounted on the ends o axes projecting laterally from the u er end of the rear side of the bucket, said ro ers adapted to bear against the rear flanges of j 5. n a dumping elevator, the combina` tion of upright rails U-shaped or channeled in cross section, the channe s of the respective rails facing each other, an elevator frame, the side members thereof being of T-shaped form in cross section, with the stems of theTs projecting into the channels of the rails, a bucket carried between the side members of the elevator frame, a pivot shaft passing freely through ears or bearings at the lower end of the bucket, brackets connected to the heads of the Tc-shaped side members of the elevator frame, and projecting forwardly therefrom, and in the rear ends of which brackets the pivot shaft is supported, a shaft journaled in the forward ends of said brackets, rollers carried at the ends of said shaft and bearing' against the forward flanges of the upright rails, rollers mounted on the ends of axes projecting laterally from the u er end of the rear side of the bucket, said ro ers adapted to bear'against the rear flanges of the u right rails, and fingers projecting-.out

ward y from the upper ends of the side mem- Y bers of the elevator frame and into the chan'- nels of the rails, said fingers beingspaced a distance apart laterally from the stems of the T-sha ed side members of the elevatorframe.

6. n a dumping elevator, the combination of rails U-shaped or channeled in cross section, the channels ofyk the rails facing each other, an elevator frame adapted to travel up and down the upright rails, thesides of ,Said frame being 'lV-shaped in cross section, with the stems of the Ts projecting outwardly and into-the channels'of the rails, and lingers projecting outwardly from the upper ends of the side members of the elevator frame and into the channels of the rails, said lingers being spacedl a distance apart laterally from the stems of the lshaped side members of the elevator' frame.

7. ln a dumping elevator, the combination I ings at the lower end of the elevator bucket, another shaft mounted in forward extensions of the brackets, said shaft carryingI on its 1 to the heads of theft-shaped side members of i ends rollers adapted to bear against thefor- 130 seance said ro ers adapted to bear against the rear faces of the upright rails, and cams secured to the rear sides of the u right rails, said cams formed with incline ends and with straight central portions between said ends, and adapted when the elevatorframe has been raised or lowered to a certain position to receive thereon the Vbearing f the upper rollers, and' thereby moveor switch the bucket rearwardly out of its normal position.

l 8. In a dumping, elevator, the combination of upright rails, an elevator frame adapted to travel up and down said rails, an elevator bucket carried between the side members of the elevator frame, a pivot shaft hav-ing its ends sup orted in brackets secured to the side mem )ers of theelevat'or frame, said shaft adapted to pass freely through ears or bearings at the lower end of the elevator bucket, another shaft mounted in forward extensions of the'brackets, said shaft carrying on its z ends rollers adapted to bear against the forward faces of the upright rails, rollers carried at the ends of axes projectingr outwardly from the upper end of the rear side of the bucket, said rollers adapted to bear against the rear faces of the upright rails, cams secured to the rear 'sides of the upright rails, said cams formed with inclined ends and with straight central portions, and adapted when the elevator frame has been raised or lowered to a certain position to receive thereon the bean ing of the u per rollers and thereby move or switch the ucket rearwardly'out of its nor- ,mal position, and stops arranged to the rear of' the cams, and adapted to be contacted with by the upper rollers of the bucket, when said bucket is switched or moved rearwardly with too great force.

' 9. 'In a dumping elevator, the combination of upright rails, an elevator frame adapted' to travel up and down said rails, an elevator bucket carried between the side members of the elevator frame, a'r pivot su ported by the elevator frame and loosely engaging the elevator bucket so as to permit said bucket to turn thereon, rollers at the ufpper and lower ends of the elevator bucket, t e u per rollers adapted to bear against the rear faces of the upright rails, and the lower rollers adapted to bear against the forward faces of the upright rails, and cams secured- 'to the rear sides of the u right rails, said cams formed with inclined) ends and with straight central portions between said ends, and adapted, when the elevator frame has been raised or lowered to ,a certain position,

'to receive thereon the bearing of the upper rollers, and thereby move or switch the bucket rearwardly out of its normal position..

K10. bucket dumping mechanism for bucket carrying elevators, consisting of two medially pivoted and upwardly curved arms, spacedsa distance a artv laterally, each arm provided `on one ace andv longitudinally thereofwith a channel, the channels ofthe` two arms facin each other.

1v1. The com ination of upright rails, an elevator frame adapted to travel up and down said rails, a bucket carried between 'the Vside members of said frame, a pivot shaftA having its ends supported in brackets, securedv to the side members ofthe elevator frame, said shaft adapted to pass freely through ears or bearings at the lower end ofzthe elevator bucket, another shaft mount-- ed in forward extensions of1 the brackets,

said shaft carrying on its ends rollers adaptedv to bear against the forward faces of the up,- right rails, rollers carried'at the ends of'axes projecting outwardl from the upper end.' of the rear' side ofV t 1e bucket, said rollers adapted to bear against the yrear faces of1 the upright rails, and bucket dumpin mechanism located at the point where t e con,- tents of the bucket are to be discharged; said mechanism consisting-of' two upwardly curved arms spaced a distance apart laterally, each arm provided on one face and longitudinally thereof with a channel, the channel ofthe two arms facing each other, and saidV channels `when the elevator has been raised a certain distance adapted to reU- ceive the u per rollers of the bucket therein, and there y effect lthe dumping off the bucket. y

12: The combination of upright rails,` an elevator frame ada ted to travel up and down said rails, a ucket carried? between' the side members of "said frame, a pivot shaft having its ends su ported in brackets secured to the side mem ers ofthe elevator frame, said shaft adapted to pass freely through ears or bearings at the lower end of the elevator bucket, another shaft mount'- ed` in forward extensions of. the brackets, said shaft carrying on its ends rollers ada ted to bear against' the forward faces of' t e upright rails, rollers carried' at' the ends of axes rojecting outwardl from the upperend of? the rear side of t e bucket, said rollers adapted to bear against the rear faces of the upright rails, and bucket dumping mechanism ocated atvthe point where the contents of the bucket are to be discharged, said mechanism consisting of two upwardly curved arms spaced a distance apart laterall each arm provided on one face and longitudinallythereof witha channel, the channels of the two arms facing each other, and the upper walls of each channel being shorter than the lower wall thereof, and terminating at a proximately the center of each arm, and th the elevator has been raised a certain distance, adapted to receive the upper rollerse said channels, when dumpin ofthe bucket. t A

13. T e combination of upright mails, an elevator frame ada ted to travel up and down said rails, a Ibucket carried between of the bucket therein and thereby effecty the -the side members' of said frame, a pivot shaft carrying on its ends rollers ,adaited to l a distance apart laterally, each arm pro-- bear against the forward faces of t eA upright rails, rollers carried at the ends of axes projecting outwardly from the upper endvof the rear side of the bucket, said rollers 'adapted to bear against the rear faces of the rails, a bucket dumping mechanism located at the point where the contents of the bucket are to be discharged, said mechanism consisting of two upwardly curved arms spaced' vided on one face and longitudinally thereof with a channel, the channels of the two arms facing each other, and the upper wall of each channel being shorter than the lower wall thereof, and terminating at approximately the center ofI the arm, and provided with an u ward straight extension, the saidchannels, wllxen the elevator has been raised a certain distance, adapted to receive the upper rollers of the bucket therein, and thereby effect the dumping of the bucket.

14. The combinationof upright rails, an elevator frame ada ted to travel up and down said rails, a bucket carried between the side members of said frame, said bucket having projections depending from the lower end thereof, a pivot shaft havin its ends suported in brackets securedto t e side meinbers of the elevator frame, said shaft adapted to pass freely throu h ears or bearings at the lower end of the e evator bucket, another shaft mounted in forward extensions of the brackets, said shaft carrying on its ends rollers adapted to bear against the forward alaaeoe I faces of the` upright rails, rollers carried at the. ends of axes projecting outwardly from the up er end of the rear side of the bucket, .said ro lers adapted to bear against the rear faces of the upright rails, bucket dumping mechanism located at the point where the contents of the bucket are to be discharged, said mechanism consisting of two upwardly curved arms spaced a distance' apart laterally, each arm provided on one face a'nd longitudinally thereof with a channel, the chan- 'nels of the twoarms facing each other, and the up er wall of the channel of each arm being s orter than the lower wall andterminating atapproximatel vthe center of each arm, and said channe s, when the elevator has been raised a certain distance, ada ted to receive the upper rollers of the buc et therein and thereby effect the dumping of the bucket, and stops extending from the elevator frame and adapted to limit the tilting of the bucket by contact .-.o'f the projections of the bucket therewith, when the |`elevator frame is pulled upwardly beyond the extent desired.

15; A rail for' bucket carrying elevators, said rail composedof sections, united at,the i joints by an angle iron of equal length with a rail section and extended over the joint ol' two sections at the back thereof and riveted or otherwise secured to said sections.

16. A rail for bucket carrying elevators, said rail composed of sections, united at the joints by an angle iron of equal length with arail section and extended over the joint of two sectionsat the back ,thereof and riveted or otherwise secured to said sections, each i angle-iron being so positioned as to fall short at one end of a section and overlap at the other end thereof.

l. in testimony whe1eof,l affix my signature,

| 1n presence of two witnesses.

I EDGAR B. sYMoNs.

Witnesses: j

A. L. MoRsELL,k

l y, ANNA F. SCHMIDTBAUER. 

